Sintering air bellow pressure tapping device

Abstract

The utility model relates to the technical field of pressure instruments, in particular to a sintering air bellow pressure tapping device which comprises a pressure transmitter, the pressure transmitter is used for converting pressure into visual signals, a pressure tapping pipeline is arranged at the lower end of the pressure transmitter and used for being communicated with the pressure transmitter and an air bellow, and the pressure tapping pipeline comprises a three-way pipe fitting. An elbow is arranged on one side of the three-way pipe fitting in the horizontal direction, the side where the elbow is located is defined as the right side, and the upper end of the elbow is connected with a pressure transmitter; a sealing plug is arranged at the upper end of the three-way pipe fitting, and a ball valve is arranged at the lower end of the three-way pipe fitting to be connected with an air bellow and control on-off of pressure airflow in the pressure tapping pipeline. The three-way pipe fitting and the elbow are arranged between the pressure transmitter and the air bellow, so that the probability that dust enters the pressure transmitter is reduced while vertical installation of the pressure transmitter is guaranteed, and then normal and effective data of the pressure transmitter can be guaranteed; in addition, due to the arrangement of the sealing plug, an operator can conveniently check and dredge the blocking condition of the pressure tapping pipeline, and the operation convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure instruments, and particularly relates to a pressure tapping device for a sintering air box. Background Art

[0002] The sintering air box is a very important device in the sintering production process, mainly composed of a single air box and a main flue. The hot flue gas generated by the combustion of coke oven gas is heated at a high temperature through the sintering material surface to produce qualified sintering materials for blast furnace smelting. The heat exchange hot flue gas is extracted by the main induced draft fan through the air box and the main flue and then discharged to the atmosphere through subsequent environmental protection desulfurization and other processes. Among them, ensuring the accuracy and effectiveness of the sintering air box pressure data in real time has become a difficult point in the work. Since there is more dust in the flue gas, problems such as blockage often occur in the pressure tapping pipeline, resulting in serious distortion of the sintering air box pressure data, thus affecting the normal operation of the sintering process.

[0003] For example, the Chinese patent application with the publication number CN212058287U discloses an integrated sampling port for the temperature and pressure of a sintering machine air box. The device includes a temperature measuring tube, a part of the temperature measuring tube is inserted into the air box cavity, and the other part of the temperature measuring tube extends out of the air box. The end of the extended part is used to install a thermocouple. There is a pressure tapping branch pipe on the pipe wall of the extended end of the temperature measuring tube. The pressure tapping branch pipe is communicated with the temperature measuring tube, and the pressure tapping branch pipe extends upward and is used to be communicated with a pressure measuring device.

[0004] However, the above device still has certain defects: 1. The above pressure tapping pipeline is in a straight cylinder shape and is directly communicated with the pressure measuring device during use, which easily causes dust to accumulate inside the pressure measuring device, affecting the measurement data and reducing the service life of the pressure measuring device; 2. The pressure tapping pipeline and the temperature measuring pipeline are fixedly connected by welding. During use, it is inconvenient to check the blockage situation of the pipeline, and at the same time, the pipeline cannot be cleaned and dredged in time after being blocked, and the operation is inconvenient. Summary of the Utility Model

[0005] The utility model provides a pressure tapping device for a sintering air box to solve the technical problem that the pressure measurement data is inaccurate due to dust accumulation inside the pressure measuring device during the production process of sintered materials.

[0006] To solve the above problems, the pressure tapping device for a sintering air box provided by the utility model adopts the following technical solutions:

[0007] A pressure tapping device for a sintering air box includes a pressure transmitter for converting pressure into a visual signal. The lower end of the pressure transmitter has a pressure tapping pipeline for communicating the pressure transmitter with the air box;

[0008] The pressure-taking pipeline includes a tee fitting. An elbow is provided on one side of the tee fitting in the horizontal direction. The side where the elbow is located is defined as the right side. The upper end of the elbow is connected to a pressure transmitter to connect the pressure and reduce the probability of dust entering the pressure transmitter.

[0009] A sealing plug is provided at the upper end of the tee fitting for inspecting and cleaning the pipeline blockage. A ball valve is provided at the lower end of the tee fitting to connect to the air box and control the on-off of the pressure air flow in the pressure-taking pipeline.

[0010] Its beneficial effects are as follows: By setting a tee fitting and an elbow between the pressure transmitter and the air box, while ensuring the vertical installation of the pressure transmitter, the probability of dust entering the pressure transmitter is reduced, and thus the normal and effective data of the pressure transmitter can be guaranteed; in addition, the setting of the sealing plug facilitates the operator to inspect and dredge the blockage of the pressure-taking pipeline, improving the convenience of operation.

[0011] Further, the tee fitting is a same-diameter threaded tee fitting.

[0012] Further, the upper end of the air box has a single-threaded head extending up and down. The lower end of the single-threaded head is connected to the air box, and the upper end of the single-threaded head is threadedly connected to the ball valve.

[0013] Further, the connection mode between the lower end of the single-threaded head and the air box is welding.

[0014] Further, double-headed screws are provided between the tee fitting and the elbow and between the tee fitting and the ball valve.

[0015] Further, a circumferentially extending polygonal protrusion for applying force is provided on the outer peripheral surface of the middle part of the double-headed screw.

[0016] Further, the lower end of the pressure transmitter has a single-threaded head extending up and down. Its upper end is fixedly connected to the transmitter, and the single-threaded head is used to connect the pressure transmitter and the elbow.

[0017] The beneficial effects of a sintering air box pressure-taking device provided by the present utility model are as follows:

[0018] 1. By setting a tee fitting and an elbow between the pressure transmitter and the air box, while ensuring the vertical installation of the pressure transmitter, the probability of dust entering the pressure transmitter is reduced, and thus the normal and effective data of the pressure transmitter can be guaranteed; in addition, the setting of the sealing plug facilitates the operator to inspect and dredge the blockage of the pressure-taking pipeline, improving the convenience of operation.

[0019] 2. By setting a ball valve between the air box and the pressure transmitter, the operator does not need to stop the machine for inspection when inspecting the pressure-taking pipeline, improving the convenience of operation. Description of the Drawings

[0020] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present utility model will become readily understandable. In the drawings, several embodiments of the present utility model are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0021] Figure 1 This is a schematic structural diagram of a sintering wind box pressure tapping device provided by the present utility model.

[0022] Description of reference numerals:

[0023] 1. Wind box; 11. Lower single-head thread; 2. Ball valve; 3. Lower double-head thread; 31. Polygonal protrusion; 4. Three-way pipe fitting; 5. Sealing plug; 6. Upper double-head thread; 7. Elbow; 8. Pressure transmitter; 81. Upper single-head thread; 9. Pressure tapping pipeline. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts fall within the protection scope of the present utility model.

[0025] The main concept of the present utility model is to set a three-way pipe fitting 4 and an elbow 7 between the pressure transmitter 8 and the wind box 1. While ensuring the vertical installation of the pressure transmitter 8, the probability of dust entering the pressure transmitter 8 is reduced, thereby ensuring the normal and effective data of the pressure transmitter 8; in addition, the setting of the sealing plug 5 facilitates the operator to check and dredge the plugging condition of the pressure tapping pipeline 9, improving the operation convenience.

[0026] After introducing the basic principle of the present utility model, the various non-restrictive embodiments of the present utility model will be specifically introduced below. The number of any element in the drawings is for illustration rather than limitation, and any naming is only for distinction and does not have any limiting meaning.

[0027] Next, with reference to several representative embodiments of the present utility model, the principle and spirit of the present utility model will be elaborated in detail.

[0028] Embodiment 1 of a sintering wind box pressure tapping device provided by the present utility model:

[0029] As Figure 1As shown in the figure, the pressure tapping device for the sintering wind box is located above the wind box 1. The device includes a pressure transmitter 8, which is used to convert pressure into a visual signal. There is a pressure tapping pipeline 9 between the pressure transmitter 8 and the wind box 1.

[0030] The pressure tapping pipeline 9 includes a three-way pipe fitting 4. The three-way pipe fitting 4 is a same-diameter threaded three-way pipe fitting 4. One side of it is provided with an elbow 7. The side where the elbow 7 is located is defined as the right side. There is an upper double-headed screw 6 between the three-way pipe fitting 4 and the elbow 7. A circumferentially extending polygonal protrusion 31 for applying force is provided on the outer peripheral surface of the middle part of the upper double-headed screw 6; the lower end of the pressure transmitter 8 has an upper single-headed screw 81 extending up and down, the upper end of which is fixedly connected to the pressure transmitter 8, and the lower end of the upper single-headed screw 81 is threadedly connected to the elbow 7 to connect the pressure and reduce the probability of dust entering the pressure transmitter 8; a sealing plug 5 is provided at the upper end of the three-way pipe fitting 4 for checking and cleaning the pipeline blockage.

[0031] In addition, the lower end of the three-way pipe fitting 4 has a ball valve 2, which is used to control the on-off of the pressure air flow in the pressure tapping pipeline 9. A lower double-headed screw 3 is provided between the ball valve 2 and the three-way pipe fitting 4 for connecting the ball valve 2 and the three-way pipe fitting 4. A circumferentially extending polygonal protrusion 31 for applying force is provided on the outer peripheral surface of the middle part of it; the upper end of the wind box 1 has a lower single-headed screw 11 extending up and down. The lower end of the lower single-headed screw 11 is welded to the wind box 1, and the upper end of the lower single-headed screw 11 is threadedly connected to the ball valve 2 to connect the wind box 1 and the ball valve 2.

[0032] During the use process, the hot flue gas in the wind box 1 enters the three-way pipe fitting 4 through the lower single-headed screw 11 and the ball valve 2, and then the hot flue gas reaches the pressure transmitter 8 through the elbow 7. At this time, the internal pressure of the pressure tapping pipeline 9 is the same as the pressure in the wind box 1, and then the pressure is converted into a visual signal through the pressure transmitter 8; during the transmission of the hot flue gas, since the pressure transmitter 8 is connected to the wind box 1 in a curved manner through the three-way pipe fitting 4 and the elbow 7, the dust in the hot flue gas is not easy to enter the pressure transmitter 8, thereby being able to avoid the influence of dust accumulation on the pressure transmitter 8, and thus ensuring the correct indication of the pressure transmitter 8; in addition, the setting of the sealing plug 5 is convenient for the operator to check and dredge the pressure tapping pipeline 9, improving the operation convenience.

[0033] Embodiment 2 of a pressure tapping device for a sintering wind box provided by the present utility model:

[0034] The main difference from Embodiment 1 is:

[0035] In Embodiment 1, the three-way pipe fitting is a same-diameter threaded three-way pipe fitting.

[0036] In this embodiment, the three-way pipe fitting can be set as a same-diameter ferrule type three-way pipe fitting.

[0037] Embodiment 3 of a pressure tapping device for a sintering wind box provided by the present utility model:

[0038] The main difference between this and Embodiment 1 lies in that:

[0039] In Embodiment 1, the tee fitting and the elbow are connected by a double-threaded screw.

[0040] In this embodiment, the tee fitting and the elbow can be connected by welding.

[0041] Based on the above description of this specification, those skilled in the art can also understand the following terms used, such as the terms indicating the orientation or positional relationship, such as "upper", "lower", "front", "rear", "left", "right", "width", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings of this specification. It is only for the purpose of facilitating the description of the solution of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in the specific orientation. Therefore, the above terms of orientation or positional relationship cannot be understood or interpreted as a limitation to the solution of the present invention.

[0042] In addition, in the description of this specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise specifically defined.

Claims

1. A sintering bellows pressure taking device, comprising a pressure transmitter, the pressure transmitter is used to convert the pressure into a visual signal, the lower end of the pressure transmitter is provided with a pressure taking pipeline, the pressure taking pipeline is used to connect the pressure transmitter and the bellows, and is characterized in that: The pressure-taking pipeline includes a three-way pipe fitting, and an elbow is provided on one side of the three-way pipe fitting in the horizontal direction. The side where the elbow is located is defined as the right side. The upper end of the elbow is connected to the pressure transmitter to connect the pressure and reduce the probability of dust entering the pressure transmitter; a sealing plug is provided at the upper end of the three-way pipe fitting for checking and clearing pipeline blockage, and a ball valve is provided at the lower end of the three-way pipe fitting to connect the bellows and control the on and off of the pressure airflow in the pressure-taking pipeline.

2. A sintering bellows pressure taking device according to claim 1, characterized in that: The three-way pipe fitting is a same-diameter threaded three-way pipe fitting.

3. A sintering bellows pressure taking device according to claim 2, characterized in that: The upper end of the bellows is provided with a lower single-end thread extending up and down, the lower end of the lower single-end thread is connected to the bellows, and the upper end of the lower single-end thread is connected to the ball valve through a thread.

4. A sintering bellows pressure taking device according to claim 3, characterized in that: The lower end of the lower single-end wire is connected to the bellows by welding.

5. A sintering bellows pressure taking device according to claim 4, characterized in that: Double-ended threads are arranged between the three-way pipe fitting and the elbow, and between the three-way pipe fitting and the ball valve.

6. A sintering bellows pressure taking device according to claim 5, characterized in that: The outer peripheral surface of the middle part of the double-ended wire is provided with a circumferentially extending polygonal protrusion for applying force.

7. A sintering bellows pressure taking device according to claim 6, characterized in that: The lower end of the pressure transmitter is provided with an upper single-end thread extending up and down, the upper end of which is fixedly connected to the transmitter, and the upper single-end thread is used to connect the pressure transmitter and the elbow.

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